There are a number of applications that will make sure you're on time for your appointments and never forget your best friend's birthday, but they're not all created equal. Here's a look at five of the most popular desktop calendaring applications. »6/26/11 8:00am 6/26/11 8:00am

Lifehacker reader Madlin found a useful synergy between folder syncing service Dropbox and the embeded desktop calendar Rainlendar. Since they both work on all platforms, it's easy to synchronize calendars between every desktop. »5/19/09 5:30am 5/19/09 5:30am